Door and locking device therefor



H. Y. EVANS DOOR AND LOCKING DEVICE THEREFOR 2 Sheets-Sheet 1 'FIC. a.

- 1,523,939 H, Y. EVANS noon AND LOCKING DEVICE THEREFOR Filed June 12. 1923 2 Sheets-Sheet 2 Patented Jan. 20, 1925. 4

HENRY Y-EOMA N EVANS, OF EGHAM, ENGLAND.

DOOR AN-D- LOOKING DEV-ICE THEREFOR.

Application filed June 12, 1923. Serial No. 644,999,

To all whom it may concern: and the recess in the frame in which the cam Be it known that 1, Henry YEOMAN engages, Evans, a subject of the King of Great Figures e rand- 5 are plan and sectionalele- Britain, and resident, of Egharn, in, the VfltlO'H respectively of the locking mechacounty of Surrey, England, have inyented nism andg to certain new, and useful Improvement-sin Figure 6 is av sectional View to show one Doors and Locking Devices Therefor, of of thefld'oor rollers. which the following is specification. In the-. V Pblica tion of theimentioi'i shown This invention relates to; doors andloclrin the drawings a represents a guide frame ing devices therefor and more particularly that-may be secured by means of bolts or c." t th tr ti f th d r frofi u y rivets to the shell of therotary drum or in drums or cages of washing, dryin g, cleaning which isprovidedthe door opening. adapt machines and the like but the imprmrein-ents (1- t0 be B l 01 QXPOSGCl by the sli'clable hereinafter described. are equally applicable door d that is curved to COHfOBlH tO the pet othelypurposes h ggdogys f th s i ripheral surface of the drum 6 and is .pro- 7 and other places of public enter a inmgnt Vided with front and rear rollers .6 and provided with what are known as panic carried; by the spindles g mounted in the bolts. I bossesg" formed ontxthe longitudinal angle The main object of the. present invention bars h of the dooiyfra iie h that islixedly so is to provide an improved construction of QUDtG L 51 91 0 Along 6 PPQ 4 51? 7/ door that can be readily applie d to such of the door Opening cis disposed the angle rotary drums aforesaid for example and iron is fired, co-the inner f fth 1 m locking devices therefor by the operation of all-{ lpngthelower edgeof the said openr which the door securely clamped in the 111g ischsposed the Z iron it thehorizonta]. as closed position, A. further object is to p ro flange of which isfixed to the outer surface Vide means whereby should the inachine be of the shell bh The front edged of the started and thedrum revo red. in eitherlidoor d is bent slightly upwards as shown rection with the door unlockedthesaid door in; Figurel in ordenthat in theclosed posiis automatically locked anda stillnfurther tion it may rest on the horizontal flange of 22-0 object is to provide a door. carried on rollers tlleiz riron 70., the members A: and is forming so air 'anged that thedoor is not apt to run sealing members on which the top and botback on to and thereby injure the ha nds of 1 g ofthedoor areclamped when the operator of the machine. pressure is.appliedtovlock,the door as herein- Fnrther objects and advantagesof the in described 516083595 Z 1 vention will. be apparent fromuth-e detailed in e-g i e fr med tqrreceiye therollers e 11:.) following description thereof witlnreference d f t h- Q qp i l: hfl' Q r d to the accompanying drawings, the, novel SO tlilQt the rolle s f shall not fall into the refeatures being pointed out in the appended (losses Z when the dooixisbeing opened the l j 'l rollers c and are placedin different circum- 40 In the said drawings wherein similar reffi iQ l p a e that ey ra l .1 ,0 2,- erence characters relate to like parts in all p s tesides. of the central Webs of theguic e th figufes; frame a, the, rollersc travelling on the Figure 1 is a. r s cti of a! tary flanges z and the rollers f on the flanges y'. drum having a slidable door and locking de- The locklng cams on are of the shape Vices thereon constructed according to this shown in Figure 3 with long and Shor 1 i ti th door being shown in the open ameters and they are formed on the ends of o ition. the spindle n rotatably mounted in the bars Figure 2 is a plan View looking in the dih and operated by means of the levers 0. rection of the arrow to show the guide In the closed position of the door by rotaframe, the door and door frame, the locking tion of the spindle n the cams on are turned 1' means and cooperating parts. into such a position that the edges m of Figures 3, 4, 5 and 6 are detail views to a the cams on engage the top of the apertures 79 larger scale. in the guide frame a and thereby press the Figure 3 showing a portion of the guide door (Z inwardly against the horizontal sealframe, the locking cam in its closed position ing members is effectively locking it in the closed position. To unlock the door the spindle n is rotated by the levers whereby the cams n are turned into the position shown in Figures 4 and 5 with their long diameters disposed across the apertures p and the pressure on the door (Z is relaxed and it can be moved into the open position runningfreely on its rollers c and f.

To maintain the cams m in either the closed or open positions the construction shown in Figures Land 5 is employed.

9 is a helical spring disposed around the spindle a one end of the said spring abutting againstthe lever 0 and the other end against a collar 1 having a sliding movement on the spindle a due to the pin t of the 7 lease the locking cams m the collar 1 is dis engaged from the collar w but on release of the lever 0 the collars r and to immediately reengage and the cams m are locked in their 7 open or closed positions as the case may be.

It will be'obvious that in the closed position thedoor will be kept rigid by the operation of'the locking cams m and if, inadvertently the machine is caused to rotate With the door unlocked that the door must automatically be locked in whichever direction the movement takes place by the lever 0 striking against the edge of the outer shell of the machine.

In arranging the position of the rollers and f which carry the door d I place them so that when the door is opened upwards the centre of gravity is beyond the vertical line, so that the door is not apt to run back on the hands of the operator of the machine.

What I claim is 1 In combination, a door, rollers carried by said door, a guide frame forming a path for said rollers and provided with depressions inwhich said rollers engage in the closed position of the door, a pair of sealing members, and means for moving said door against said sealing members'and for causing the rollers to enter the depressions in said guide frame.

2. In combination, a rotary drum with an opening in the shell thereof, a door for closing and exposing said openings, rollers carried on a door frame fixedly mounted on said door, a guide frame forming paths for said rollers and provided with depressions in diflerent circumferential planes of said drum, said rollers engaging in said depressions in the closed position of the door, a pair of sealing members on said drum, cams formed on a spindle rotatably mounted in said door frame and slidable through said guide frame and means for rotating said spindle to cause said cams to press said door against said sealing members and to force the rollers into said depressions.

3. In combination, a rotary drum with an opening in the shell thereof, a door for closing and exposing said opening, rollers earried on a door frame fixedly mounted on said door, a guide frame forming paths for said rollers and provided with depressions in different circumferential planes of said drum, said rollers engaging in said depressions in the closed position of the door, a pair of sealing members, cams formed on a spindle rotatably mounted in said door frame, and levers for rotating said spindle to cause said cams to engage the upper ends of openings in said guide frame to press said door against said sealing members and to force the rollers into said depressions.

4.- In combination, a rotary drum with an opening in the shell thereof, a door for closing and exposing said opening, rollers carried on a door frame fixedly mounted on said door, a guide frame forming paths for said rollers and provided with depressions in different circumferential planes of said drum, said rollers engaging in said depressions in the closed position of the door, a pair of sealing members, cams formed on a spindle rotatably mounted in said door frame, levers for rotating said spindle to move said cams whereby to press the door against said sealing members and to force the rollers into said depressions, said cams adapted to be turned sidewise and to slide longitudinally of said guide frame when the door is moved to open and closed positions.

In testimony whereof I aflix my signature.

HENRY YEOMAN EVANS. 

